Malicious PDF — malware analysis report

Static analysis result for SHA-256 a79b8c56ffaad318…

MALICIOUS

PDF

36.6 KB Created: 2020-09-01 14:08:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afda76a2a64e678d43f12c66f4984f06 SHA-1: e14c8558a80d909a45fde30f5a7ec8170e8c5dcf SHA-256: a79b8c56ffaad3181d1b7cd3c681a9fb26ccba8950d9de8b36307fdea562e123
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. The link leads to 'https://ttraff.club/wix?keyword=baaghi+film+song++sab+tera', suggesting a lure to a malicious site. The file also exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility of the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/wix?keyword=baaghi+film+song++sab+tera
    • https://cdn.shopify.com/s/files/1/0467/8071/1065/files/kanerigiwofudi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/industrial_automated_systems_instrumentation_and_motion_control.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/h_pylori_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/paxoguxiturefu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/entenda_o_autismo.pdf
    • https://static.usrfiles.com/ugd/6f58fb_3135ef4432d345d4a23e9f46debcae65.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_ebe6fe12867d4e74b938f1dc9ec06af6.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2c4bba5127a4c2b93fd32c817457492.pdf
    • https://static.usrfiles.com/ugd/4d400c_754a9e20f1314e43b6c2cb8df9301bf1.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1507/files/fortresscraft_evolved_hivemind.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/bijexuvapipinewavido.pdf
    • https://cdn.shopify.com/s/files/1/0428/9072/3487/files/nejoxurupeviropoxatenazi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6530/3455/files/photoshop_background_effects_free.pdf
    • https://cdn.shopify.com/s/files/1/0460/3310/9156/files/40018961932.pdf
    • https://cdn.shopify.com/s/files/1/0433/5468/5599/files/ecriture_personnelle_extraordinaire.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050c1.bin
684ca8388a9f8ce93cbf9a7ae9ddcc9a667aba818cdae484375654284a4b9dc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x50C1 5368 bytes
font_01_sfnt_off000062e1.bin
8551c327770b4be9e8aec2087dbb6a225dccedf1af855bfff84166fa228c7534
pdf-font-stream PDF embedded font (sfnt) at offset 0x62E1 10088 bytes